Senior Full-Stack Software Engineer

Jawnt partners with organizations to provide their members access to transportation. We’re on a mission to make transportation more accessible for everyone while encouraging public transit and active transportation whenever possible. Based in Philadelphia but remote-friendly, Jawnt is a seed-stage start-up at the intersection of fintech, HR tech, and mobility.

About The Role

We are seeking a Senior Full-Stack Software Engineer to join our high performing engineering team as we continue to grow the business and execute across multiple challenging domains.

Jawnt is a fast-paced, early-stage startup tackling complex challenges across multiple business domains for enterprise and government clients. Working here is like playing a video game on “Hard Mode”—it’s dynamic, demanding, and incredibly rewarding. To thrive at Jawnt, you’ll need exceptional prioritization skills, a proactive sense of urgency, and the ability to stay focused under pressure while delivering high-quality results.

What You’ll Do

• Design, develop, and implement end-to-end web functionality using Next.js and FastAPI using existing components and patterns
• Develop and optimize high-volume message queues for efficient and reliable processing of business-critical workflows
• Ship code that improves our infrastructure, continuous delivery, observability, and internal tooling across the entire stack
• Improve others through code reviews, thorough documentation, and mentorship.
• Participate in the architectural review board, providing valuable technical advice and contributing to strategic technical discussions
  
  

Who You Are

• 5 years of experience in software development with strong computer science fundamentals
• Experience in our technology stack- Next.js, Python, Flask, FastAPI, Celery, PostgreSQL, Redis, RabbitMQ, Terraform, Kubernetes, Datadog
• Experience with unit testing, functional testing, and acceptance testing in a continuous integration / continuous delivery (CI/CD) environment
• Deep understanding of relational databases, normalization, and SQL
• Deep understanding of modern cloud architecture (containerization, k8s, monitoring)
• Language agnostic
  
  

Benefits And Compensation

• Salary: $140-155,000
• Equity: 0.5-0.2%
• Comprehensive benefits package: unlimited PTO, health and dental coverage, life insurance, 401k
• $100/month transit credit on your Jawnt Pass
  
  

At Jawnt, our company value “All aboard!” isn’t just about transportation—it’s about inclusion. We’re building a team that reflects diverse perspectives and experiences, and we encourage you to apply even if you don’t check every box. If your career has taken you on a jaunt through unexpected paths, we’d love to hear your story.

Jawnt is proud to be an equal opportunity employer.